| Primary satellite | Secondary satellite |
| Name | FENGYUN 1C DEB | deb Kosmos-1275 |
| Spacetrack catalog number | 31091 | 17615 |
| Radar cross section | small | small |
| Epoch of two-line elements (UTC) | 2025 Nov 16 04:29 | 2025 Nov 13 16:19 |
| Time of closest approach (UTC) | 2025 Oct 14 22:01:42.977 |
| Minimum distance | 1665.632 km |
| Height difference | -0.564 km |
| Relative speed | 5.407 km/s |
| Angle between velocity vectors | 42° |
| Geographic position | 71.6°N, 123.8°E |
| Height | 858 km |
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